Jul 27, 2022 · Mobile Development

Android APK Digital Signature: Purpose, Principles, and v1‑v4 Signing Schemes

Android APK digital signatures ensure app integrity and author authenticity by hashing files and signing with a private key, with four schemes—v1 (JAR‑style per‑file digests), v2 (whole‑APK block), v3 (key‑rotation support), and v4 (external .idsig for fast incremental installs)—each offering progressively stronger protection and installation speed.

APK signingAndroidMobile Security

0 likes · 16 min read

Android APK Digital Signature: Purpose, Principles, and v1‑v4 Signing Schemes

Tencent TDS Service

Apr 27, 2017 · Mobile Development

How to Build Fast Multi‑Channel Android APKs Without Re‑Signing

This article explains various multi‑channel packaging methods for Android APKs, compares traditional Gradle productFlavors and ApkTool approaches, and introduces efficient V1‑ and V2‑based channel insertion techniques that avoid rebuilding or re‑signing, while providing integration steps for the ApkChannelPackage plugin.

APKAndroidGradle

0 likes · 24 min read

How to Build Fast Multi‑Channel Android APKs Without Re‑Signing